Citation

Balali V. Mineta Transportation Institute, 20-27. San José, CA, USA: Mineta Transportation Institute, 2020.

Copyright

(Copyright 2020, Mineta Transportation Institute)

The full document is available online.

Abstract

Studies have indicated that emotions can significantly be influenced by environmental factors; these factors can also significantly influence drivers' emotional state and, accordingly, their driving behavior. Furthermore, as the demand for autonomous vehicles is expected to significantly increase within the next decade, a proper understanding of drivers'/passengers' emotions, behavior, and preferences will be needed in order to create an acceptable level of trust with humans. This paper proposes a novel semi-automated approach for understanding the effect of environmental factors on drivers' emotions and behavioral changes through a naturalistic driving study. This setup includes a frontal road and facial camera, a smart watch for tracking physiological measurements, and a Controller Area Network (CAN) serial data logger. The results suggest that the driver's affect is highly influenced by the type of road and the weather conditions, which have the potential to change driving behaviors. For instance, when the research defines emotional metrics as valence and engagement, results reveal there exist significant differences between human emotion in different weather conditions and road types. Participants' engagement was higher in rainy and clear weather compared to cloudy weather. More-over, engagement was higher on city streets and highways compared to one-lane roads and two-lane highways.

Naturalistic Driving Study,
Emotions and Behaviors, Human
Sensing, Computer Vision, Human-
in-the-loop systems

DOI: 10.31979/mti.2020.1928